Multiflour sifter



June 11, 1929. J BRUNNER 1,716,761

MULT I FLOUR S IFTER Filed Oct. 18, 1926 glwwnto'o filo/m FBrm/rer Ez g.3 7W Patented June 11, 1929.

PATENT OFFICE.

JOHN F. BRUNNEB, OF SEATTLE, WASHI NGTON.

MULTIFLOUR SIFTER.

Application filed October 18, 1926.

The invention is a flour sitter having a cylindrical screen arranged sothat the flour must pass through the screen twice as it passes from oneend to the other and also so that the position may be reversed to permitthe Hour to pass back throughthe screen.

The object of the invention is to provide a sitter tor flour, or thelike, in which the flour may be sitted as many times as may be desired,without removing it from the device.

Another object ot the invention is to pro vide a sitter tor flour, orthe like, which has a stationary cylindrical screen and is adaptable topermit the flour to pass through both sides of the screen.

And a still turther object of the invention is to provide a sitter torflour, or the like, of a simple and economical construction.

\Vith these ends in view the invention embodies a sitter having an uppercompartment, a lower compartment, a cylindrical screen between the twocompartments, closures at the outer ends ot the said compartments, rodson the interior of the said screen and a handle tor rotating the saidrods.

Other features and advantages ot the invention will appear trom thefollowing de scription, taken in connection with the drawings, wherein:

Figure 1 is a view showing the end. ot the sitter. v

Figure 2 is a sectional view through the cylindrical screen.

Figure 3 is a side View ot the sitter, with part broken away.

In the drawings the device is shown as it would be made, wherein numeral1 indicates the casin g, numeral 2 the screen and numeral 3 the rotatingbars within the screen.

The casing 1 may be made as shown, with an outwardly tapering uppersection 4 and a lower section 5 with the sides tapering in the oppositedirection. At the ends ot the sections are flanges 6 forming slots 7into which plates 8 with flanges 9 at their outer ends may slide to torma closure tor the device. The side walls of the sections t and 5 tapertoward the center and are attached to the cylindrical screen 2 at thepoints 10, as shown. It will be noted that the connection between thescreen 2 and the walls may be made in any suitable manner and Serial No.142,238.

the shape of the walls at this point may be varied so that any desiredamount ot the walls may engage the screen.

The screen 2, which may be ot any suitable size may be made 0t finewire, or of any suitable material and may be 0t any desired mesh.

The rods 3 extend lengthwise ot the screen and engage the inner surtacethereot. These rods are bent inwards at the ends, forming spiders 11,which are mounted on a central shaft 12, by flattening the shatt, andsplitting the rods of the spider, as shown at the point 13 0t Figure 2.The outer end ot the shaft 12 is bent at right angles torming an arm 14which has a handle 15 at the outer end by which it may be rotated. Itwill be observed that as the handle is rotated it will cause the rods 3to revolve around the inner surtace ot the screen and thereby scrape thescreen so that the flour, or the like, will pass through it.

It will be understood that changes may be made in the constructionwithout departing from the spirit ot the invention, one 0t which changesmay be in the design ot the casing, another may be in the arrangement otthe screen and still another may be in the use of other means toragitating the screen.

The construction will be readily under stood from the foregoingdescription- To use the device, flour or the like may be placed in theupper compartment and as the handle is rotated the tlour will passdownward through the screen, passing first into the screen and thenthrough the lower side thereot. Atter the flour has passed through thescreen the device may be turned upside down and then as the handle isrotated, the flour will pass back through both sides of the screen sothat it may be re-sitted and as this process may readily be repeated theflour may readily be re-sitted as many times as may be desired withoutremoving it trom the sitter. The flour may be removed. at any time byremoving one of the plates 8. It is understood that although this isdescribed as a flour sitter it may be used tor sitting any suitablematerial.

Having thus fully described the invention, what I claim as new anddesire to secure by Letters Patent is:

In a device of the class described, a sta tionary cylindrical screen, arotating element having bars engaging the inner surface of the screenrotatably mounted therein, a handle extending beyond the end of thescreen by which the rotating element may be operated, an upper and lowerrectangular shaped casing with outwardly sloping sides extending fromthe screen upward and downward thereby forming casings above and belowthe screen and suitable closures for the 10 outer ends of the saidcasings.

In testimony whereof I affix my signature.

JOHN F. BRUNNER.

